{"instruction": "You are an expert in relationship extraction. Please extract relationship triples that match the schema definition from the input. Return an empty list for relationships that do not exist. Please respond in the format of a JSON string.", "schema": ["spouse", "top members employees", "countries of residence", "alternate names"], "input": "It was operated by the Pacific Great Eastern later known as the  British Columbia  Railway Company and then  BC Rail  ."}
{"spouse": [], "top members employees": [], "countries of residence": [], "alternate names": [{"subject": "British Columbia", "object": "BC Rail"}]}